Warning- Video contains graphic content.<br/> <br />Relentless carnage in Mexico's drug war.<br/> <br />In the final days before Mexico's presidential elections, humiliating mistakes in the state crackdown on the violence continue to tarnish outgoing President Felipe Calderon's term.<br/> <br />On Monday, gunmen killed three policemen near a fast-food court at Mexico City's international airport.<br/> <br />Hours later, the government said the killers were police officers on a drug cartel payroll, and that they escaped.<br/> <br />Last week, Mexican marines announced that they had captured a son of the country's most wanted trafficker.<br/> <br />The next day, the attorney general admitted they had the wrong man.<br/> <br />Calderon's successor will inherit the ongoing drug-related violence plaguing the nation.<br/> <br />As elections approach, however, candidates are largely shying away from the looming issue, journalist Jose Reveles told Reuters.<br/> <br />(SOUNDBITE) (Spanish) JOSE REVELES, JOURNALIST AND EXPERT ON ORGANIZED CRIME AND SECURITY, SAYING:<br/> <br />"Curiously, in the comments of the candidates, the topic has been almost absent. Everybody speaks a little bit about the insecurity, what they will do with the army on the streets, gradually returning them to their barracks, as well as establishing a national police force. But they haven't established any other sort of measures to take that will diminish the levels of violence we are living."<br/> <br />Mexico's presidential elections are on July 1.<br/> <br />Sarah Sheffer, Reuters
